Lubricated baffle for heat exchangers



April 17, 1934. i MATEER 5 AL 1,955,006

LU BRICATED BAFFLE FOR HEAT EXCHANGERS Filed Dec. 2, 1952 3 Sheets-$heet 1 April 17, 1934. I M'ATEER r 195E006 LUBRIGATED BAFFLE FOR HEAT EXCHANGERS Filed Dec. 2, 1932 s Sheets -Sheet 2 April -17, 1934- G. L. MATEER ET AL 7 1,955,006

LUBRIQATED BAFFLE FOR HEAT EXCHANGERS Filed Dec. ,2, 1932 3 Sheets-sheaf. 3

Patented Apr. 17, 1934 LUBRICATED RAFFLE son near nxcnanolins George L. Mateer, Etosfile, and Casper F. Halter,

Westfield N. J., assignors to Standard Oil Development Co.

Application December 2, 1932, Serial No. 645,330

8 Claims. (Cl. 257-236) This invention relates to improvements in baffles for heat exchangers, and more particularly relates to lubricated bafiles. The invention will be fully understood from the following descrip- 5 tion taken in connection with the accompanying drawings in which latter Fig. 1 is a longitudinal sectional view of a heat exchanger showing a baflle to which the inventio is applied.

Fig. 2 is a transverse sectional view taken along the line II II of Fig. 1.

Figs. 3, 4, 5 and 6 are transverse sectional views through a heat exchanger and showing alternative formsmf the gland between the baffle and the shell of the exchanger.

Fig. '7 is a sectional view taken along the line VIIVII of Fig. 6.

Fig. 8 is a transverse sectional view through the opposite end of the tube sheet and baffle i1- lustrated in Figs. 6 and 7- showing the gland in side elevation and showin the passage for lubricant through the tube sheet.

Figs. 9', 10 and 11 are transverse sectional views through a heat exchanger showing further alternative forms of the gland between the baflle and the shell of the exchanger.

Fig. 12 is a detail view of the gland structure of Fig. 11 and Fig. 13 is a perspective view looking toward the end of the baflle and block in Fig. 7..

Referring particularly to Figs. 1 and 2, reference numeral 1 designates the. shell of a heat exchanger. The shell 1 is provided with end closures 2 and 3. A tube bundle extends longitudinally of the shell 1. The tube bundle comat their opposite ends in tube sheets 6 and 7. A horizontal plate or baffle 8 extends longitudinally through an intermediate. portion of the heat exchanger. The horizontal baffle 8 is seaed against the tube sheet 6 and terminates in spaced relation to the tube sheet 7. The horizontal ballie 8 divides the shell 1 into passageways 10 and 11 which communicate through the space 10 between the end of the horizontal baflle and the tube sheet 7.

The horizontal baflle 8 is sealed against the walls of the shell 1 through the following arrangements of parts: The interior surface of the opposite walls of the shell 1 is provided with longitudinally extending recesses 15. The passageways 16 are formed through the wall of the shell 1 opening into the recesses 15 and communicate upon theexterior of the shell with 111- bricators 17. The lubricators are of any suitable construction for forcing lubricant under pressure prises a plurality of tubes 5 which are supportedinto the recesses 15. Therecesses 15 when filled with the proper lubricant provide a positive seal which prevents by-passing of liquid or vapor and directs fluid vapor flow in the heat exchanger and also'permits the removal of the tube bundle from the shell without binding. The joint between the bafile 8 and the shell is lubricated by using a lubricator upon the outside of the shell similar in design to those common in industrial use. I

Referring particularly to Fig. 3, a modified form of joint between the shell 1 and the baflle 8 is shown. The shell 1 is provided with longitudinally extending recesses 20. The bafile 8 is provided with inset edge portions 21 adapted to fit within the recess 20. The outer face 22 of the inset portion 21 is provided with a longitudinally extending recess 24. The recess 24 provides room for a tube 26 which extends longitudinally of and is secured to the base wall of the recess 20. The tube 26 is adapted to receive lubricant under pressure from any suitable source, not shown, and is perforated at spaced intervals topermit the lubricant to be ejected into the joint between the baflle 8 and shell 1.

Referring particularly to Fig. 4, a modified form of 'joint between the shell 1 and the bafile 8 is shown in which recesses 30 extend longitudinally in the interior of the shell. A tube. 31 extends longitudinally through the baflle 8 and opens laterally of the baflie through tubes 32 into the side Walls of the recess 30. The lubricant is adapted to be forced from a suitable wurce of supply not shown.

Referring particularly to Fig. 5, U shaped members 35 are secured as by welding or brazing to the inner surface of opposite walls of the shell 1. The side edges of the solid baflle 8 project into the space between the arms of the U shaped member 35. The joint between the baflle 8 and the U shaped member 35 is lubricated and sealed by means of lubricant introduced from a plurality of suitable lubricators 36 through pasasgeways 37.

Referring particularly to Figs. 6, 7, 8 and 13, the shell 1 is provided with longitudinally extending recesses 39 in the opposite inner faces of the shell. Longitudinally extending sleeve members 40 are sprung into and extend through the walls of the recesses 39. The tubular sleeve members 40 comprise a cylindrical portion 41 having outwardly extending arms 42 which project into and form a seal with the walls of the recesses 39. The side walls of the baflle 8 are con cave at 44 to engage the convex faces of the sleeves 40. The sleeves 40 are closed at their *40 64 for lubricant.

opposite ends by means .of suitable blocks 45. Compressible thrust block 46 including a member which fits snugly in the floating end of slot 39 seals slot 39 against loss of lubricant and allows 5 longitudinal expansion of sleeves 40 at end of slot 39 and allows for linear expansion of baflle 8. The battle 8 is secured to the sleeves 40 by means of suitable screws 50.

The joint between shell 1 and the sleeves 40 10 is lubricated through the following arrangement of parts: Tubes 51 which may or may not be used extend longitudinally within the sleeves 40. Each tube 51 may be provided at spaced intervals with laterally opening apertures 53 adapted to deliver the lubricant into the interior of the sleeve 40. The lubricant'is delivered from openings 53 in the sleeve 40 into the space between the slot 39 and the sleeve 40. The lubricant is delivered into the tube 51 through a passageway 54 in the tube sheet 55. The passageway 54 communicates with a suitable source of lubricant under pressure, not shown, upon the exterior of the heat exchanger. Referring to Fig. 9, the joint between the shell 1 and the bafiie 8 comprises a tubular sleeve 58 which is secured to the edge wall of the baffle 8. The sleeve 58 is provided with a longitudinally extending slot facing outwardly from the baffle 8. Round packing 59 is disposed in the sleeve and protrudes outwardly through the slot into position to engage the shell 1, forming a seal therewith. The packing is provided with a channel 60 fonlubricant.

In Fig. 10, the joint between the baiiie 8 and the shell 1 is formed by means of packing strips 61 which protrude beyond the baffie 8 on opposite sides of the baiiie. --The packing strips are secured to the baffle 8 by means of suitable bolts 62 and plates 63. The space between the protruding ends of the packing 61 forms a channel In the form of the invention shown in Figs. 11 and 12, the baflle 8 is formed of. cover plates 65 which are secured to spacer blocks 66. Packing 6'? protrudes from between the cover plates into engagement with' the shell 1. A lubricant channel 68 extends longitudinally in the packing 67.

While a preferred form of apparatus for lubricating and sealing a plate or bailie in a container has been shown and described, it will be understood that the structure can be modified as desired depending upon the style of baflle or plate used in the container.

Various changes may be made within the scope of the appended claims in which it is desired to claim all nbvelty' inherent in the invention as broadly as the prior art permits.

' We claim: 1

1. Heat exchange equipment, comprising a shell, a tube bundle in the shell, a baflle extending longitudinally of and engaging the side walls of the shell, and means for forcing lubricant between the bafile and side walls whereby the space between the b'aflle and shell is sealed with lubricant.

2. Heat exchange equipment comprising a shell, a tube bundle in the shell, a baflle extendin longitudinally of and engaging the side walls of the shell, the shell having recesses in its side walls to receive the edges of the baflle, and means for forcing lubricant into the recesses.

3. Heat exchange equipment, comprising a shell, a tube bundle in the shell, a baflle extending longitudinally of the shell, the shell having recesses in its side walls to receive the edges of the battle, and a longitudinally extending tube in the recesses adapted to deliver lubricant into the recesses.

4. Heat exchange equipment, comprising a shell, a tube bundle in the shell, a bafiie extending longitudinally of the shell, the shell having longitudinally extending recesses in its opposite faces, the side walls of the battle being reduced to project into the recesses, and means for forcing lubricant between the baflle and shell.

5. Heat exchange equipment, comprising a shell, a tube bundle in the shell, a baffle extending longitudinally of theshell, the shell having recesses to receive the opposite edges of the baflle, tubes in the baflie adapted to deliver lubricant into the recesses.

6. Heat exchange equipment, comprising a shell, a tube bundle in the shell, a baflle extending longitudinally of the shell, U shaped members projecting from opposite walls of the shell the arms of which receive the baffie, and means for forcing lubricant between the bailie and the U shaped members.

'7. Heat exchange equipment, comprising a shell, a tube bundle in the shell, a baflle extending longitudinally of the shell, tubular sleeves expanded into slots in the opposite walls of the shell, the baflle associated with the sleeves, and means for forcing lubricant into the sleeves and through the walls of the sleeve against the shell.

8. Apparatus for the treatment of fluid comprising a shell, a plate extending longitudinally of and engaging the side walls of the shell, and means for forcing lubricant between the plate and side walls whereby the space between the plate and shell is sealed with lubricant.'

GEORGE L. MATEER. CASPER P. HALLER. 

